Non-destructive testing of an ancient Masonry Bastion

Altunışık, Ahmet Can; Adanur, Süleyman; Genç, Ali Fuat; Günaydın, Murat; Okur, Fatih Yesevi

doi:10.1016/j.culher.2016.05.008

Cited by 26 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this aim, non-destructive experimental methods are used in the literature. Numerical studies validated and updated using non-destructive experimental measurement results are more suitable and reliable for the historical masonry structures (Gentile and Saisi, 2007;Votsis et al, 2012;Altunışık et al, 2016). With the help of experimental studies, the strength values of the building material can be estimated, and the dynamic characteristics of the structure such as frequencies, mode shapes and damping ratios can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Effect of Damping Ratios on the Seismic Behavior of a Historical Masonry Guesthouse Building

Genç

Ertürk

Altunışık

et al. 2021

Recep Tayyip Erdoğan Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi

Self Cite

View full text Add to dashboard Cite

The dynamic parameters obtained depending on the existing structural properties, material properties, boundary and damage condition are quite effective on the behavior of the structures under the effect of dynamic loads. These dynamic parameters have characteristic features for each structure. In this study, the effect of damping ratio, which is one of the dynamic characteristics, on the seismic behavior of historical structures was studied. For this aim, historical masonry Guesthouse Building belong to the Church of Santa Maria was selected to examined. Linear time history analyses were performed for three different damping ratios as 2%, 5%, and 10%. The horizontal component of Erzincan Earthquake (1992) was used in linear time history analyses. The maximum displacement, principal stress and strain values obtained from performed linear time history analyses for different damping ratios were compared. It is observed that, displacement, stress and strain values increase as the damping ratio decrease when the results are examined. It is concluded that, damping ratio is the important parameter for the evaluation of seismic response of historical masonry structures which are weak to external effect especially earthquake. Therefore, the damping ratios should be obtained with experimental tests before the numerical evaluation of seismic behavior.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Damping Ratios on the Seismic Behavior of a Historical Masonry Guesthouse Building

Genç

Ertürk

Altunışık

et al. 2021

Recep Tayyip Erdoğan Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi

Self Cite

View full text Add to dashboard Cite

show abstract

“…Valluzzi et al used Infrared Thermography and ambient vibration tests to assess the structural qualification of the Sarno Baths, Pompeii [40]. Altunişik et al performed experimental measurements by ambient vibration test on an ancient masonry Bastion and extracted three first natural frequencies of the Bastion [3]. Many studies were done on the structural behavior assessment of historic monumental construction by finite element modeling and analysis [4,6,7,9,14,15,[17][18][19]22,24,25,28,29,31,35,38].…”

Section: Introductionmentioning

confidence: 99%

Reliability-Based Safety Evaluation of the BISTOON Historic Masonry Arch Bridge

Pouraminian

Pourbakhshian

Farsangi

et al. 2020

Civil and Environmental Engineering Reports

View full text Add to dashboard Cite

This research examines the probabilistic safety assessment of the historic BISTOON arch bridge. Probabilistic analysis based on the Load-Resistance model was performed. The evaluation of implicit functions of load and resistance was performed by the finite element method, and the Monte-Carlo approach was used for experiment simulation. The sampling method used was Latin Hypercube. Four random variables were considered including modulus of elasticity of brick and infilled materials and the specific mass of brick and infilled materials. The normal distribution was used to express the statistical properties of the random variables. The coefficient of variation was defined as 10%. Linear behavior was assumed for the bridge materials. Three output parameters of maximum bridge displacement, maximum tensile stress, and minimum compressive stress were assigned as structural limit states. A sensitivity analysis for probabilistic analysis was performed using the Spearman ranking method. The results showed that the sensitivity of output parameters to infilled density changes is high. The results also indicated that the system probability of failure is equal to p fsystem =1.55 × 10−3. The bridge safety index value obtained is βt = 2.96, which is lower than the recommended target safety index. The required safety parameters for the bridge have not been met and the bridge is at the risk of failure.

show abstract

“…In addition to numerical finite element analyses and analytical calculation, nondestructive ambient vibration examinations are widely conducted to get the dynamic features in functioning condition without any external forces. A vast amount of literature can be found regarding the finite element model updating of steel structures, 13–20 reinforced concrete structures, 21–27 base isolated structures, 28 timber structures, 29,30 and masonry structures 31–36 . However, there are very limited studies about the ambient vibration test‐based system identification and FEM updating of concrete steel composite structures 37–39 …”

Section: Introductionmentioning

confidence: 99%

Model updating‐based automated damage detection of concrete‐encased composite column‐beam connections

Nasery

Hüsem

Okur

et al. 2020

Struct Control Health Monit

Self Cite

View full text Add to dashboard Cite

Summary This paper presents a comparative study about the numerical and experimental system identification and model updating‐based automated damage detection of concrete‐encased composite column‐beam connections. Four different column‐beam connection types named as CBC#A, CBC#B, CBC#C, and CBC#D were considered without any changes in geometrical configuration. Numerical and experimental dynamic characteristics were extracted by initial finite element analysis and nondestructive experimental measurements for undamaged condition. Enhanced frequency domain decomposition (EFDD) method was used for experimental modal extractions. A good agreement was observed between experimental natural frequencies but not enough correlation between damping ratios for all connection types. Maximum differences between initial finite element and undamaged experimental results were calculated as 34.68% for CBC#A, 40.78% for CBC#B, 33.15% for CBC#C, and 47.13% for CBC#D type connection details. The differences were reduced to 0.24%, 0.24%, 0.16%, and 0.15%, respectively, by automated model updating procedure using spring coefficient, modulus of elasticity and weight per unit volume. In the case of the damaged condition, lateral forces were applied to simulate the effect of an earthquake. Cracks strongly affected the natural frequencies. The mode shapes were not broken evidently after damaged conditions. The mode shapes definitely deviated a bit, but generally the same after damages. The natural frequencies have decreased non‐monotonically due to the decrease in the rigidity of the column and beam at the cracked section. Maximum differences were calculated as 14.96% for CBC#A, 41.08% for CBC#B, 31.35% for CBC#C, and 45.93% for CBC#D type connection details. After automated model updating the above‐mentioned differences were reduced to 0.35%, 0.78%, 0.73%, and 0.85% respectively. Contour diagrams of changes of updating parameters were plotted for damage identification. The regions with high difference rates indicated the location of the damage.

show abstract

Non-destructive testing of an ancient Masonry Bastion

Cited by 26 publications

References 19 publications

Effect of Damping Ratios on the Seismic Behavior of a Historical Masonry Guesthouse Building

Effect of Damping Ratios on the Seismic Behavior of a Historical Masonry Guesthouse Building

Reliability-Based Safety Evaluation of the BISTOON Historic Masonry Arch Bridge

Model updating‐based automated damage detection of concrete‐encased composite column‐beam connections

Contact Info

Product

Resources

About